Tire-building machine



J. L. BUTLER.

TIRE BUILDING MACHINE.

APPUCATION FILED MAYZT, 1910.

ii ifil? l Patented June 21,

chine embodying my invention.

he swung upwardly out of opt JAIEES L. BUTLER, OF ARES OHIO, ASSIGNGB T THE GQODEi/ICEI G'DMPAISIY,

OF NEW YORK, N. "Z, A. CQItIE'ORQLTION OI NE'W' TIRE-BUILDING- MIACHINE.

Application filed May 27,

T 0 all whom it may concern.

Be it known that 1, JAMES L. BUTLER, a citizen of theUnited States, residing at Akron, in the county of Summit and State of Ohio, have invented a new and useful Tire-Building Machine, of which the -following is a specification.

This-invention relates to means for sup-- porting and driving thering core or mandrel of a machine for building pneumatic tires, and its object is to save time and labor in mounting and dismounting the core as compared with the usual plan of supporting the core on a chuck.

The invention relates more particularly to the supporting and driving of a tire-forming core in a vertical plane, and I have shown it applied to a machine having means for stretching a strip of rubberized fabric circumferentially over the core, to make an open-bellied casing. The machine illus trated is also provided wih certain tools for smoothing the sides of the 'l'ahric, but it will be understood that the invention is not Wholly restricted to these features.

Of the accompanyingmawings, Figure 1 is a front elevation of a tire-building ina- Fig. 3 is a vertical section on a larger scale. taken on the line 2-2 of Fig. 1, showing the core, together with its supporting and driving means.

The machine h) is provided with a suitable frame 11, and is adapted to re rive a reel 12 of fabric and liner which is led around a geared stretcher drum 13. the liner losing; rolled up on a reel 1i, and the fabric passing over a former 36 onto the annular tireforming core 15, which is mounted to retate in the same vertical plane with these fabric feeding and stretching; devices. The margins of the fabric are pressed into conformity with the contour of the core by means of suitable side tools 16, which may position in the usual manner. Other tools or ap- .pliances (not shown) may he employed for rolling and trimming the fabric around the heads.

The core 15 is suspended on a shaft 2% mounted to turn in a suitable hearing 21 and driven by means of gears (not shown} by power delivered to the machine through a driving belt The outer end of shaft 20 is-ot reduce-1i diameter, forming a shoulder Specification of Letters Patent.

rest on the roller disks Patented, one Eli i231.

1919. Serial No. oaoei.

against which a keyed driving-gear pinion 24-, flanked. by a pair of core-supporting roller flanges or disks 25, 25, is held by a nut 26.

The core 15 has secured to its inner periphery an internal driven gear 30 fastened 1n place by a plurality of pins 31. This ring is formed with teeth 32 adapted to mesh with those of the pinion 24L andis laterally extended on both sides of said teeth to form two annular tracks which This construc-- tion relieves the pinion teeth of the weight of the core and also maintains-the desired 'axia] position of the latter on the driving shaft 20 by reason of the fact that the driven gear is straddled by the roller flanges 25.

35 is a flanged or cireuinierentially grooved guide roller mounted to turn loosely on a fixed t'rame stud 3'? and straddling the internal gear at a point located on the inner periphery of the core at an intermediate height, about 90 degrees from .the shaft 2%), onthe side toward the stretcher drum The flanges oi this roller ride. on the iJlElCli'S 33. and said roller serves the double purpose of meeting with the upper roller flanges 25 to maintain the core in its proper plane of rotation and oi counteracting the tei'idency toward a radial or pendulous thrust movement ol' the core in a right-hand directl -on as viewed in Fin. 1. due to the forward drive oi the gear pinion and hacluvard resistance of the tcnsioued fabric.

in the operation of my improvement, the core 15 is maintained in operative relation to its. supporting and driving devices by gravity, and is or may he supported, driven and guided wholly 'lroin its inner periphery and at two circumferential points only of said inner periphery. it may therefore he lifted out of the machine. or operatively lo cated therein without moving; any of supporting and h Y thns considerahly redu V and labor heretofore devoted to rota nipulations, I

will, oi course, he understood that the particular form of embodiment o't inven tion may he considerably varied Witl'lOiliT departing from. its e sential characteristics.-

1 claim:

1. in a machine for making pneumatic tires, the combination of an annular tire forming core mounted to rotate in a vertillll pneumatic tire easin;

jnn upper position for supper cai plane and previded with. gem-teeth en its inner periphery, ve-Hnr means in an upper position engaging said inner periphery for rotait'nbiy supporting; the cum, and :i driving-gem. pinion engngin g; the geanteeln on the core, said cc-ie hen. (iecachnhij main tained in one: ive awn to said, i'elini' means and driving gravity.

2. In {L nimthine for ni upigsn-heiiieti pneumatic: tire 0215i the eeinhinutinn (it an zinnuiai' tireimnnng coy-e ninimteai to 130- tzite in :1 vertical. pinne, means to :1 ip ying a strip of fabric ionn'itmii abet the circumference of said 001": and bwetnhing the middle of the inhrie' as it Winds upon the core, an eccentric; Hymn ted (ilivillg shaft geared to the inner 'g'ieriphei'y of the core, and means acting against the core fei- 0pposing the thrust at the hitter its own piane due to the driving force and t0 tension of the fabric,

3. In a machine for making); epenheiiieti pneumatic tire (-asin ggs the nenihinatien of an annular tire-i"'0iniing minted to 1'0- tzite in a vertical piann iippi ai stretching devices meinited in 1L inn: at one sicie of the core, th' L i'eiiei' ei'igzzging the inner per nhe' i of core on the side toward said i zihiic-s'uppiyinn and stretehing deviees, miter means in said were min wing shah; l .iphei y 01?: Sill-Ii core from its inner peripher geared to the inner for rotating the hitter.

4. In a nmc-hine for making); one ,iiieti pneumatic tire casings; the eninhinai'ion ei an annular, tire-forming cm'e nmnnteii to 10- tate in a vertical plane, and def to the-axis of said core for {Illifii A i the core from its inner periphery said devices being detacimhiy nmintnined in oneiative relation to the core by the Weigh A he core and inchuiing means for resisting" oth exiainnd i'zuhai thrusts" i5. In a machine i imnmiqinp; mien-hail i he cn'mhination of a nieviii 47-11 its innei petiretei ming (were ripherv with located he and an 6! nppei pesitinn eeeenti'icziiiy of said core, min" iit inwing it driving-gear plnion eng; Y 1; szn interim]. gear and n panyot Miler in strnrhiiing the gear and engaging (aim IiT OF SIlPPG the Weight of the 1 axial displacement theren for making open-bellied sings, the combination of 2, 601%) iinennteii to white in verezins inmate in an nppei' p0si is iii the eore for sup- J is core LFTOI'H its inner thin-term ticai p tion e e-cent pan-t up -nd L :vinp;

itei'i'nedini-e height and in Li'i'i? inn- 1? pei'iphery of the core for ,e niiai and a; 121i thrusts thereof. i a machine for making openhellieci pneumatic tire casings, the combination of :i tiff8-'i OTH1iH5 eni'e mounted to rotate in a vertical e and prevideci on its inner? peiiphei y Wu an internal gear flanked by .a PM? 0;

inhir tintm, a si'ntft mounted in upper positieh and gem.- pininn engaging said ii a pair of roiier flanges an id gear 2! nd engaging the tracks, anti :x gn fiin r device mounted eceentricaliy in: an interineijiin hi and having; I'OiiQl :(iznigns suwhiiin iternai gear iinci enisting radix} and isiis it the m i nnny mt i. have hereunto set um 1 L115}; E33 (in 5 1919,

h no? eeeentrieei iy-mounted roller 

